Device for controlling correction operations of a time display device

Abstract

A device comprises means for distinguishing a short depression from a long depression depending on the period of actuation of a control button (block 14), means for selecting in the case of a short depression a minutes correction mode in which the display advances by one minute for each pressure (block 18) and, in the case of a long depression, an hours correction mode in which the display advances by complete hours as long as the depression lasts (block 19). It further comprises means for defining two different advance speeds, a slower speed (SLOW+60 m) and a faster speed (FAST+60 mn) in the hours correction mode, and means for passing automatically first to the slow speed to advance a first hour and then to the fast speed for the following hours.

What is claimed is: 
     
       1. A device for controlling correction operations of a time display device showing hours and minutes comprising a control button and means for distinguishing a short depression from a long depression, depending on the period of actuation of the control button, means for selecting in the case of a short depression a minutes correction mode in which the display advances by one minute for each depression and, in the case of a long depression, an hours correction mode in which the display advances by complete hours as long as the depressions last, and means for defining two different advance speeds, a slower speed and a faster speed, in the hours correction mode, and means for passing automatically firstly to the slow speed to advance a first hour and then to the fast speed for the following hours. 
     
     
       2. A device according to claim 1 wherein the display device also displays seconds, further comprising means for distinguishing a first short depression from following short or long depressions, and means for automatically returning the seconds display to 0 upon the first short depression. 
     
     
       3. A device according to claim 1 or 2 wherein the display device is an electro-optical display which simulates the hands of an analog display, further comprising means for causing said hands to be no longer visible when the duration of a long depression exceeds a predetermined period.